* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

/* Style the header */
.header {
  background-color: #f1f1f1;
  padding: 20px;
  text-align: center;
}

/* Style the navigation menu */
.topnav {
  overflow: hidden;
  background-color: #000000;
  position: relative;
}

/* Hide the links inside the navigation menu (except for logo/home) */
.topnav #myLinks {
  display: none;
}

/* Style navigation menu links */
.topnav a {
  color: white;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
  display: block;
}

/* Style the hamburger menu */
.topnav a.icon {
  background: black;
  display: block;
  position: absolute;
  right: 0;
  top: 0;
}

/* Add a grey background color on mouse-over */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}

/* Style the active link (or home/logo) */
.active {
  background-color: #000000;
  color: #000000;
}

/* Create three unequal columns that floats next to each other */
.column {
  float: left;
  padding: 10px;
}

/* Left and right column */
.column.side {
  width: 25%;
  padding: 20px;
}

/* Middle column */
.column.middle {
  width: 75%;
  padding: 20px;
}

/* Clear floats after the columns */
.row::after {
  content: "";
  display: table;
  clear: both;
}

html {
  box-sizing: border-box;
}

.colum.bottom {
    width: 75%;
}

.column.tutor {
  float: left;
  width: 18%;
  margin-bottom: 16px;
}

.social-icons {
    padding: 20px;
}

/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .column.side, .column.middle {
    width: 100%;
  }
  
    .column.tutor {
    width: 100%;
    display: block;
  }
}

.card {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
}

.container {
  padding: 0 16px;
}

.container::after, .row::after {
  content: "";
  clear: both;
  display: table;
}
}